关于apache-commons-net FTPS支持的问题

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关于apache-commons-net FTPS支持的问题25

package examples.ftp;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.security.NoSuchAlgorithmException;

import javax.net.SocketFactory;
import javax.net.ssl.SSLSocketFactory;

import org.apache.commons.net.PrintCommandListener;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPConnectionClosedException;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
import org.apache.commons.net.ftp.FTPSClient;

public final class FTPSExample {
public static final String USAGE = "Usage: ftp [-s] [-b] <127.0.0.1> <shanming> <shanming> <test.txt> <shanming.txt>\n"
+ "\nDefault behavior is to download a file and use ASCII transfer mode.\n"
+ "\t-s store file on server (upload)\n"
+ "\t-b use binary transfer mode\n";

public static final void main(String[] args)
throws NoSuchAlgorithmException {
int base = 0;
boolean storeFile = false, binaryTransfer = false, error = false;
String server, username, password, remote, local;
String protocol = "SSL"; // SSL/TLS
FTPClient ftps;
for (base = 0; base < args.length; base++) {
if (args[base].startsWith("-s"))
storeFile = true;
else if (args[base].startsWith("-b"))
binaryTransfer = true;
else
break;
}
if ((args.length - base) != 5) {
System.err.println(USAGE);
System.exit(1);
}
server = args[base++];
username = args[base++];
password = args[base++];
remote = args[base++];
local = args[base];
ftps = new FTPSClient(protocol);
ftps.enterLocalPassiveMode();
ftps.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
try {
int reply;
ftps.connect(server);
System.out.println("Connected to " + server + ".");
// After connection attempt, you should check the reply code to verify
// success.
reply = ftps.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftps.disconnect();
System.err.println("FTP server refused connection.");
System.exit(1);
}
} catch (IOException e) {
if (ftps.isConnected()) {
try {
ftps.disconnect();
} catch (IOException f) {
// do nothing
}
}
System.err.println("Could not connect to server.");
e.printStackTrace();
System.exit(1);
}
__main: try {
ftps.setBufferSize(1000);
if (!ftps.login(username, password,"990")) {
ftps.logout();
error = true;
break __main;
}

System.out.println("Remote system is: " + ftps.getSystemName());
System.out.println("Working directory is: " + ftps.printWorkingDirectory());
System.out.println("default port is: " + ftps.getDefaultPort());
//if (binaryTransfer)
//ftps.setFileType(FTP.BINARY_FILE_TYPE);
// Use passive mode as default because most of us are
// behind firewalls these days.
SocketFactory factory = SSLSocketFactory.getDefault();
ftps.setSocketFactory(factory);
FTPFile[] files=ftps.listFiles();
for(FTPFile file:files){
System.out.println("ftpfile name is :" + file.getName());
}

if (storeFile) {
System.out.println("Here is upload!");
ftps.changeWorkingDirectory("/");
InputStream input;
input = new FileInputStream(local);
ftps.storeFile(remote, input);
input.close();
} else {
System.out.println("Here is download!");
ftps.changeWorkingDirectory("/");
OutputStream output;
output = new FileOutputStream(local);
ftps.retrieveFile(remote, output);
output.close();
}
ftps.logout();
} catch (FTPConnectionClosedException e)
{
error = true;
System.err.println("Server closed connection.");
e.printStackTrace();
} catch (IOException e) {
error = true;
e.printStackTrace();
} finally {
if (ftps.isConnected()) {
try {
ftps.disconnect();
} catch (IOException f)

{
// do nothing
}
}
}
System.exit(error ? 1 : 0);
} // end main
}
==============================
输出结果：
220-FileZilla Server version 0.9.39 beta
220-written by Tim Kosse (Tim.Kosse@gmx.de)
220 Please visit http://sourceforge.net/projects/filezilla/
AUTH TLS
234 Using authentication type TLS
Connected to 127.0.0.1.
USER shanming
331 Password required for shanming
PASS shanming
230 Logged on
SYST
215 UNIX emulated by FileZilla
Remote system is: UNIX emulated by FileZilla
PWD
257 "/" is current directory.
Working directory is: /
default port is: 21
PORT 127,0,0,1,9,238
200 Port command successful
LIST
521 PROT P required
Here is download!
CWD /
250 CWD successful. "/" is current directory.
PORT 127,0,0,1,9,239
200 Port command successful
RETR ss.txt
521 PROT P required
QUIT
221 Goodbye

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